<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <title>404 Not Found - 小蓝书</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            background-color: #f2f2f2;
            font-family: 'Arial', sans-serif;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            color: #333;
        }
        .container {
            text-align: center;
        }
        h1 {
            font-size: 6rem;
            color: #2b87ff;
        }
        h2 {
            font-size: 2rem;
            margin-bottom: 20px;
        }
        p {
            font-size: 1.2rem;
            margin-bottom: 30px;
            color: #777;
        }
        a {
            display: inline-block;
            padding: 6px 20px;
            background-color: #2b87ff;
            color: #fff;
            text-decoration: none;
            font-size: 0.9rem;
            border-radius: 5px;
            transition: background-color 0.3s ease;
        }
        a:hover {
            background-color: #227df4;
        }
        .error-graphic {
            font-size: 10rem;
            color: #2b87ff;
            margin-bottom: 20px;
        }
        @media (max-width: 600px) {
            h1 {
                font-size: 4rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            p {
                font-size: 1rem;
            }
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="error-graphic">🤔️</div>
        <h1>nothing...</h1>
        <h2>404！Not Found！</h2>
        <p>抱歉，您访问的页面不存在。</p>
        <a href="/">返回首页</a>
    </div>
</body>
</html>
